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Explanation: Amalthea is Jupiter's fifth largest moon, much smaller than the four Galilean satellites Io, Europa, Ganymede, and Callisto. The orbit of Amalthea is inside of these moons, and with its long axis always pointing toward Jupiter. It's dark surface color is probably due to sulfur being expelled from Io. Amalthea is not massive enough for its internal gravity to make it spherical. Amalthea was discovered in 1892 by Edward Barnard.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Jupiter - Amalthea
Publications with words: Jupiter - Amalthea
See also:
- APOD: 2025 April 2 Á Jupiter and Ring in Infrared from Webb
- APOD: 2025 March 9 Á Cyclones at Jupiters North Pole
- APOD: 2025 February 16 Á Perijove 11: Passing Jupiter
- Stereo Jupiter near Opposition
- APOD: 2024 November 3 Á Jupiter Abyss
- APOD: 2024 May 19 Á Jupiter Diving
- APOD: 2024 April 21 Á Perijove 16: Passing Jupiter